var mystyle=[
          {
                    "featureType": "all",
                    "elementType": "all",
                    "stylers": {
                              "lightness": 4,
                              "saturation": -47
                    }
          },
          {
                    "featureType": "country",
                    "elementType": "all",
                    "stylers": {
                              "visibility": "off"
                    }
          },
          {
                    "featureType": "highway",
                    "elementType": "all",
                    "stylers": {
                              "visibility": "off"
                    }
          },
          {
                    "featureType": "boundary",
                    "elementType": "geometry",
                    "stylers": {
                              "lightness": 10
                    }
          },
          {
                    "featureType": "arterial",
                    "elementType": "all",
                    "stylers": {
                              "color": "#cacdcfff"
                    }
          }
];